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单词
columbite
释义
co·lum·bite
(k
ə
-l
ŭ
m
b
ī
t
′
)
n.
A black, red-brown, or colorless mineral, essentially (Fe, Mn)(Nb, Ta)
2
O
6
, the principal ore of niobium.
[
COLUMB(IUM)
+
-ITE
1
.]
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更新时间:2025/7/14 20:35:51